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什么是首選域設(shè)置

首選域設(shè)置是指在網(wǎng)絡(luò)或系統(tǒng)中指定首選的域名服務(wù)器。當計算機需要解析一個域名時，它會先詢問首選域名服務(wù)器，如果該服務(wù)器無法解析，則會繼續(xù)詢問其它域名服務(wù)器。首選域名服務(wù)器的選擇可以影響網(wǎng)絡(luò)或系統(tǒng)的性能和可靠性。

Public @ 2023-06-04 02:00:06

1. 什么是301跳轉(zhuǎn)？ 301跳轉(zhuǎn)是一種HTTP狀態(tài)碼，表示永久性重定向。它告訴搜索引擎和用戶請求的頁面已經(jīng)永久性移動到了另一個URL地址。當用戶訪問舊的URL時，服務(wù)器會自動將其重定向到新的URL。 2. 為什么需要使用301跳轉(zhuǎn)？使用301跳轉(zhuǎn)可以幫助網(wǎng)站解決重復(fù)內(nèi)容的問題，提高網(wǎng)站的排名和用戶體驗。當一個頁面更改了URL或者被刪除時，使用301跳轉(zhuǎn)可以告知搜索引擎和用戶該頁面已經(jīng)被

Public @ 2023-06-08 00:50:29

哪些網(wǎng)站的目錄需求運用robots.txt文件制止抓取

1. 銀行和金融機構(gòu)的網(wǎng)站，因為這些網(wǎng)站可能包含敏感信息，例如客戶的個人和財務(wù)信息。 2. 醫(yī)療保健機構(gòu)的網(wǎng)站，因為這些網(wǎng)站可能包含個人醫(yī)療信息。 3. 藝術(shù)、音樂和影片網(wǎng)站，因為這些網(wǎng)站可能包含受版權(quán)法保護的內(nèi)容。 4. 政府網(wǎng)站，特別是警察局和情報機構(gòu)的網(wǎng)站，因為這些機構(gòu)的網(wǎng)站可能包含安全敏感信息。 5. 搜索引擎的漏洞報告網(wǎng)站，因為這些網(wǎng)站可能敏感地顯示諸如數(shù)據(jù)庫配置、文件位置等敏感

Public @ 2023-06-15 06:00:13

什么是首選域設(shè)置

Public @ 2023-06-04 02:00:06

什么是首選域設(shè)置

網(wǎng)站在做優(yōu)化的時候有一個專業(yè)術(shù)語叫首選域，這個專業(yè)術(shù)語在很多SEO培訓(xùn)機構(gòu)或者SEO行業(yè)前輩經(jīng)驗分享中都有提到過。那究竟什么是首選域的作用，網(wǎng)站如何設(shè)置首選域　　什么是首選域呢?　　網(wǎng)站的首選域類似于標準化URL，是搜索引擎索引中編制網(wǎng)頁的域。在搜索引擎搜索結(jié)果中，指向網(wǎng)站的鏈接有www和非www網(wǎng)址格式。而所謂的首選域是我們希望網(wǎng)站在搜索結(jié)果中顯示的格式?！　∫话闱闆r下，搜索引擎認為域名帶www

Public @ 2021-09-10 16:21:37

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基本文件流程錯誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.028370s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.020033s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.019131s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.020076s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.018992s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.020144s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8406 LIMIT 1 [ RunTime:0.019164s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.019361s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.019547s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.020273s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8406 LIMIT 1 [ RunTime:0.019897s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+2 where id=8406 [ RunTime:0.021582s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海網(wǎng)站結(jié)構(gòu)優(yōu)化' AND `status` <> -1 LIMIT 1 [ RunTime:0.026514s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海網(wǎng)站結(jié)構(gòu)優(yōu)化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.042091s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海首選域' AND `status` <> -1 LIMIT 1 [ RunTime:0.026628s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海首選域' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.034654s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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什么是首選域設(shè)置

301跳轉(zhuǎn)常見問題匯總

哪些網(wǎng)站的目錄需求運用robots.txt文件制止抓取

什么是首選域設(shè)置

什么是首選域設(shè)置

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